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Dembech, E

"The potential exposure and hazards of metal-based nanoparticles on plants and environment, with special emphasis on ZnO NPs, TiO2 NPs, and AgNPs: A review"

J Clin Med 10(3):402 Mulhall J et al (2005) Sildenafil citrate response correlates with the nature and the severity of penile vascular insufficiency

One research study found that only 13 out of a 100 men got better without treatment

doi:10.3390/ijms18102147 [15] Obrenovich MEM

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